To　investigate　the　mass　transfer　behavior　of　a　liquid-liquid　system　with　high　density　difference　(Δ?≈500　kg/m3),　single　drop　experiments　were　performed　by　using　the　ternary　chloroform-ethanol-water　system.　The　mass　transfer　direction　was　from　the　dispersed　phase　to　the　continuous　phase,　while　the　aqueous　phase　was　dispersed　in　chloroform　to　generate　drops.　The　influences　of　drop　diameter,　initial　solute　concentration　and　temperature　on　the　mass　transfer　were　investigated.　The　effects　of　the　drop　diameter　and　initial　solute　concentration　on　interfacial　instability　of　droplets　hanging　in　the　continuous　phase　were　also　observed.　For　the　purpose　of　correlation,　a　mass　transfer　enhancement　factor　F　was　introduced　and　then　correlated　as　a　function　of　dimensionless　variables.　The　modified　correlation　from　the　mass　transfer　coefficient　model　was　found　to　fit　well　with　the　experimental　values.